.painter {
    width: 100%;
    height: 100%;
    iframe {
        width: 100%;
        height: 100%;
        overflow: hidden;
    }
    #painter {
        width: 100%;
        height: 100%;
        position: absolute;
        top: 0;
        left: 0;
        visibility: hidden;
        &.show {
            visibility: visible;
        }
    }
}